MECHAN. CAT 4 SIL 3 PLe. Installation Guide : SCU-1 & HE Safety Switches. Description. Operation. Applications. Declaration of Conformity

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1 MECHAN Installation Guide : SCU-1 & HE Safety Switches Keep this guide for future reference This information is designed to help suitably qualified personnel install and operate Mechan Safety equipment. Before using this product, read this guide thoroughly along with any relevant European and/or National standards e.g. Machinery Directive 2006/42/EC and it s amendments, Provision and Use of Work Equipment Regulations. Further information can be obtained from Mechan Controls Description Mechan HE safety switches are magnetically coded, solid state non-contact safety switches for use in machine guarding applications. Non-contact operation makes the HE switches easy to install and tolerant to misalignment. The solid state design is even more tolerant to shock and vibration, and provides single point switching which makes for a simpler and more reliable machine guard interlock. The additional security of the coded magnetic operation along with fully sealed IP67 rating make these switches ideal for use in wet or dusty and harsh environments. The HE safety switches have been designed to connect to the SCU-1 Safety Control Unit. When installed correctly, up to 30 switches can be installed in series. Operation The HE safety switch has 2 x N/O + 1 N/C bi-directional solid state outputs along with built in LED(s) for indication. When installed on a machine guard, power is applied, and the switch and actuator are within the specified operating range, the N/O Outputs will be closed, the N/C Output will be open. When the actuator moves out of the operating range, the N/O Outputs will open, the N/C Output will close. (See page 3 for LED Indication.) The HE safety switch and actuator have an 7mm switching distance and can approach each other from most angles. When the switch is closed the targets on the printed face of the switch must be aligned. To avoid physical damage, do not use the switch and actuator as a stop, leave a 1-2 mm gap for best operation and tolerance to machine guard vibration. Applications Interlocked guards where additional security required. Door locking is not required. Harsh environments where vibration, water or dust are problems. Food and Beverage packing/filling systems Dairy Pharmaceutical Paper Industry Can Forming and Filling, (Aluminium, Steel, Plastic) Semi conductor Manufacture/Assembly. APPROVALS CE Complies with all relevant sections of the CE marking directive TUV CAT 4 SIL 3 PLe EUROPEAN DIRECTIVES Machinery Directive 2006/42/EC Low Voltage Directive 2006/95/EC Electromagnetic Compatibility Directive 2004/108/EC EUROPEAN STANDARDS EN ISO EN ISO EN EN EN 1088 EN Safety of Machinery Safety related parts of control systems Safety of Machinery - Functional safety of safety related electrical, electronic and programmable electronic control systems Safety of Machinery Electrical equipment for machines Low voltage switch gear and control gear Interlocking devices associated with guards Safety of Machinery Specification for low voltage switchgear and control gear Declaration of Conformity See back page for declaration of conformity. CAT 4 SIL 3 PLe

2 SAFETY CONTROL UNIT The control modules are designed to be mounted in an IP55 (minimum) control cabinet. Mounting on 35mm DIN Rail 1 2 POWER When power is connected, the red LED will be illuminated The modules clip on to standard 35 mm symmetric DIN-Rail To remove the modules, gently lever out the DIN clip with a small screwdriver as shown (1). Removal from 35mm DIN Rail 2 1 Indication OUTPUT When K1 & K2 are illuminated green, the outputs 13/14 & 23/24 will be closed and 31/32 will open. Tilt the unit in the direction (2) and slip the unit off the DIN Rail CONTROL UNIT RESET To remove lid, use small screwdriver in the lid recess as shown and prise gently upwards. Manual Reset Internal switch is set to the LOWER position Circuit X1/X2 requires a momentary N/O button to initialise reset. Automatic Reset Internal switch is set to the UPPER position Circuit X1/X2 requires a link. NOTE: Closed contacts on K3 & K4 can still be monitored SAFETY SWITCHES Mounting the Safety Switches Do not use safety switches as a stop. 1 mm separation when closed provides the best results. Minimum separation 50mm between adjacent switches. DO NOT mount on hinged side of the guard. EN1088 : Hide the actuator where possible. S A A S A S Minimum Gap A S S A 50 mm

3 SAFETY SWITCHES Indication HE1 HE2 HED GS1 Power Run GS2 Power Off Off Off Off Off Off Off Power On Gate(s) Open Red Red Off Red Off Off Power On Gate Closed Green Green Yellow Red Off Off Power On Gate 1 and 2 Closed Yellow Red Green Yellow HE1 HE1-SS, HE2 & HE2-SS HED Operation The HE Safety switches are extremely versatile and can approach each other from any angle without false tripping. When the guard is closed the targets on the printed face of the switch and actuator must be aligned. Switching Characteristics The chart shows the switching points in millimetres.

4 CONNECTIONS & FUSES Pre-wired Switches HE1 / HE2 / HED Contacts 2NO + 1 NC HE1 / HE2 Contacts 2NO HE1 / HE2 Contacts 1NO + 1 NC M12 Leaded Quick Disconnect M12 Leaded Quick Disconnect (LQD) HE1 / HE2 / HED Contacts 2NO + 1 NC CONTACT OPERATION -The N/O contact(s) on Mechan safety switches are open when the actuator is away from the switch. When the actuator is within the specified operating distance the N/O contact(s) will close and the N/C contact will open FUSES - All contacts should have external fuses fitted. Fuse Rating = 400mA Quick Blow CONNECTION FOR A SINGLE SWITCH

5 CONNECTION FOR UP TO 30 SWITCHES

6 DIMENSIONS Control Unit Safety Switches HE-1 HE-1-SS HE-2 HE-2-SS HE-D NOTE HED switch has three options for cable exit to enusure easy installation: HED-21-DC-xxC Cabel exit in centre of switch (1) HED-21-DC-xxL Cabel exit from left had sideof the switch (2) HED-21-DC-xxR Cabel exit from right hand side of the switch (3) xx= cable length or lqd (2) (1) (3)

7 TECHNICAL SPECIFICATIONS SAFETY CONTROL UNIT Supply nominal voltage 24Vac/dc (+/- 15 %) Nominal power consumption 3VA Safety contacts 2 x NO Auxiliary contact 1 x NC Output contact rating (max) 4A/230Vac; 2A/24Vdc(Res.)@Cos=1 Output contact rating (min) 10V/10mA Output contact fuse rating AC=5A; DC=2.5A; Quick blow Drop out time Deactivation by inputs, 13ms Internal fuse 100mA Resetable Internal fuse recovery time >2 Seconds Internal switches Reset Manual / Automatic Selectable Max conductor size 1 x 2.5mm stranded with sleeves, 1 x 4mm solid Installation group (Control unit) C in accordance with VDE0110 Enclosure protection Housing IP40, Terminals IP20 Operating temperature -10C to +55C (85% Humidity max) Storage temperature -20C to +60C Housing material Polycarbonate Red Mounting / Fixing 35mm Symmetric DIN Rail Utilisation category in accordance with EN Safety contacts:ac1 at 230 V Imin:10mA.Imax:4A Safety contacts:dc1 at 24 V Imin:10mA.Imax:2A Air gap creepage in accordance with EN Vibration In Accordance With EN Pollution Degree 2 Weight 210g Overvoltage Category III Frequency 10-55Hz Rated Insulation Voltage 250V Amplitude 0.35mm Rated Impulse Withstand Voltage 4.0KV Simultaneity Channel 1 Simultaneity Channel 2 SAFETY RELATED DATA PL In accordance with EN ISO PL-e, CAT 4 SIL CL in accordance with EN IEC SIL 3 PFHd in accordance with EN IEC x PFH 4.43 x B10d 2 X 10 6 MTTFd >100 years ( Based on usage rate of 360 days/year, 24 hours/day, 10 operations/hour ) Tm(mission time) 20 years DC 96.5% SFF 98.2% SAFETY SWITCHES Operation Coded Non-contact Contact Arrangements 2 x N/O + 1 x N/C Safety Contact Operating Distance 7mm ON / 12mm OFF Safety Contact Rating DC: 24Vdc / 400mA Auxilliary Contact Rating DC: 24Vdc / 400mA External Fusing ( When not using SCU-1 ) 400mA Dimensions See page 6 IP Rating IP67 Cable Length 100 Metres max Operating temperature -10 to +55C Storeage temperature -20 to +60C Mounting Target to target Construction Red ABS Resin Filled or 316 Grade Stainless Steel resin Filled

8 Declaration of Conformity We hereby declare that the products identified below conform to the relevant Essential Health & Safety Requirements of the European Machinery Directive (2006/42/EC),EMC Directive(2004/108/EC) and other relevant EC Directives as listed below. Mechan Product HE Series SCU-1 Safety Control Unit HE-1 Safety Switches HE-2 Safety Switches HED Safety switches Standards BS EN :2006 Safety of Machinery, Electrical equipment of machines. General requirements. BS EN : AMD Low voltage switchgear and control gear Part 5-3: Control circuit devices and switching elements Requirements for proximity devices with defined behaviour under fault conditions. BS EN :2004 Low voltage switchgear and control gear Part 5-1: Control circuit devices and switching elements electro- mechanical control circuits. EN ISO : 2008 Safety of Machinery, Safety related Parts of Control Systems EN : 2005 Safety of Machinery,-- Functional Safety of Safety elated electrical,electronic and programmable electronic Control Systems BS EN :2007 EMC Generic emission standard. Industrial. BS EN :2005 EMC Generic immunity standard. Industrial. EC-type examination No Notified body 0044, TÜV NORD CERT GmbH, Langemarckstr. 20, Essen, Germany. [ 2002/95/EC Restriction of the use of certain Hazardous substances (RoHs) ] The overall machine must comply with the machinery directive. For further information please contact Mechan Controls Plc. Authorized Signature W. Boardman WA Boardman, Managing Director July 2011 Maintenance It is recommended to check the safe operation of the of the switches and look for signs of damage or excessive wear on a weekly basis. Damaged units should be replaced or returned to the manufacturer for repair where practical. Notes In the interest of product development specifications are subject to change without notice. It is the responsibility of the user to ensure compliance with any acts or by-laws in place. All information regarding Mechan equipment is believed to be accurate at the time of printing. Responsibility cannot be accepted for errors or omissions. NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ PH , FX Document Number : IDv1